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SOLVENT EXTRACTION OF IRON FROM . - Imperial SpiralCarboxylic acids are 5-6 times cheaper than D2EHPA, so it was thought reasonable to study whether or not they are competitive for the solvent extraction of iron.solvent extraction of iron ore,solvent extraction of iron ore,Solvent extraction of iron (III) - ATLANTIS PRESSSolvent extraction of iron (III) from chloride acid solutions by decanol. Xuehua Mao. College . liquor of low-grade iron ore tailings using Aliquat 336 in kerosene.